-81=9y

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Solution for -81=9y equation:


Simplifying
-81 = 9y

Solving
-81 = 9y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-9y' to each side of the equation.
-81 + -9y = 9y + -9y

Combine like terms: 9y + -9y = 0
-81 + -9y = 0

Add '81' to each side of the equation.
-81 + 81 + -9y = 0 + 81

Combine like terms: -81 + 81 = 0
0 + -9y = 0 + 81
-9y = 0 + 81

Combine like terms: 0 + 81 = 81
-9y = 81

Divide each side by '-9'.
y = -9

Simplifying
y = -9

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